Question

if two sides AB=AC OF ∆ABC AND B = 40 THEN WHAT IS THE MEASURE OF ANGLE A​

Answer 1

Answer:

100

Step-by-step explanation:

Given an isosceles triangle since AB=AC

We know angles corresponding to isosceles triangle is equal

since angle B=40, then even angle C=40

We know sum of a triangle =180

ie angle A+B+C=180

Angle A+40+40=180

A=180-40-40

A=100

ie angle a=100